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Q.

The velocity of light in glass whose refractive index with respect to air is 1.5 is 2×108ms−1.  In a certain liquid the velocity of light is found to be 2.5×108 ms−1.  The refractive index of the liquid with respect to air is

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a

0.64

b

0.80

c

1.20

d

1.44

answer is C.

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Detailed Solution

μgμL=VLVg⇒μL=(VgVL)μg=2×1082.5×108×1.5=1.2
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